diff --git a/requirements_dev.txt b/requirements_dev.txt
index c520b11..ca05f1f 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -3,7 +3,7 @@ punch.py==1.4.0
 wheel==0.29.0
 watchdog==0.8.3
 flake8==3.4.1
-tox==2.7.0
+tox==2.8.0
 coverage==4.4.1
 Sphinx==1.6.3
 isort==4.2.15
\ No newline at end of file